100% Recycled Contents
Plastic Free
Sustainably Sourced
Eco Friendly Inks
Tear Open Strip
Verified Carbon Neutral

445x325mm Cardboard Envelope

Our range of cardboard envelopes have been created to be multi-functional, the clever design means they can be used as a traditional envelope, but they also expand for bulkier items like rigid boxes. These envelopes are part of our range of packaging which is made from 100% recycled contents.

Order before 1pm for delivery on the next working day
Total Cost:
100% Recycled Contents
Plastic Free
Sustainably Sourced
Eco Friendly Inks
Tear Open Strip
Verified Carbon Neutral

Technical Specifications

Product CodeCE3
Internal DimensionsStandard Size 440 x 320 (Expanded 380 x 260 x 55mm)
Material125T/T E
ColourBrown Kraft
End of LifeBiodegradable, Home Compostable, Recyclable
Recycled Content100%
Sealing MethodPeel & Seal

Additional Information

Cardboard envelopes and mailers are the perfect way to send your goods, they are designed to have a close fit to the product, resulting in economical shipping and no wasted packaging materials. The thick cardboard material used is strong and durable, offering excellent protection.

What Features do our Cardboard Enveloped have?

Peel & Seal: We are introducing more products to our peel & seal range because they reduce packing time and eradicate the need for applying additional tape to seal the package. Our cardboard envelopes have an overhanging release paper, making it much more easily removed and therefore speeding up despatch time.

Tear open strip: These cardboard envelopes have a perforated strip and pull tab, making unboxing a swift and simple experience.

Expandable: Our cardboard envelopes are designed to be expandable, giving you more flexibility with the amount of product you can pack:

CE1 Standard Size 255 x 204mm (Expanded 195 x 164 x 60mm)
CE2 Standard Size 375 x 295mm (Expanded 315 x 235 x 60mm)
CE3 Standard Size 445 x 325 (Expanded 385 x 265 x 60mm)

Custom Printed Cardboard Envelopes

Cardboard envelopes like these are very easy to customise. For quantities of 500 and over, you can get your cardboard envelopes custom printed. Just get in touch with the Packaging Supplies team for an instant quotation.

Do you need larger volumes or regular deliveries?

If you're looking to order larger volumes than offered in our shop or wish to order by the pallet on a regular basis, please do get in touch to speak with one of our representatives today. We can offer all types of support from 30-day accounts to stock and call off for bespoke and printed boxes, all delivered on a next day basis.

Environmental Promise

Here at packaging supplies, we are big believer in the circular economy. Paper packaging is the closest packaging material to hitting this goal, with a an impressive 85.5% recycle rate in the EU. This is reason that we have changed our product offering to be completely plastic free and focus our attention on paper products which can be 100% recycled.

Our push for sustainability doesn't just stop here. This product is part of our growing range of packaging which is 100% recyclable and made from 100% recycled contents.


All of Packaging Supplies boxes - including our cardboard envelopes - are made from recycled material. These cardboard mailing envelopes are made up of 100% recycled paper. Packaging Supplies are committed to environmental legislation.
Did you know that the corrugated industry is allowing larger companies to lower their carbon footprints regularly? On top of this through selecting experienced packaging suppliers with our expertise and experience within a large range of industries, you will benefit from packaging that will help maximise storage and reduce transport costs. As consumers push for sustainable business practices to be the forefront of business, the service and knowledge Packaging Supplies offered is welcomed with open arms.
The corrugated industry is helping retail companies to lower their carbon footprint. It is doing this by providing well-designed packaging that maximises storage and reduces transport costs. The industry has also seen a steady reduction in board weight while keeping board strength, which in turn is reducing packaging waste. At Packaging Supplies, we have experience in many industry sectors and can assist in providing the most sustainable packaging solutions.

Read More

If you are looking for something a little different, a unique size or printed packaging, we can produce a custom solution for you.

PS_Icon_Dark Green-09-Sustainably Sourced


PS_Icon_Dark Green-10-Eco Friendly Inks


PS_Icon_Dark Green-06-Plastic Free


PS_Icon_Dark Green-03-Recyclable


Hear From Our Customers

packaging solutions

Expert packaging suppliers for over 40 years, with an emphasis on plastic-free packaging

In the late 1970s, two friends and colleagues, Tim Allen and Stewart Middleton saw a gap in the market for a different type of packaging supplier. At the time, other businesses were selling custom made boxes and stocking packaging consumables, but Tim and Stewart wanted to offer more than that. They wanted to give their clients additional services, such as warehouse storage and the ability to have their packaging delivered as and when it was required. Packaging Supplies was established, and the rest is history.

Find Out More Contact Us